📖 Static demo — read-only snapshot

You’re browsing a static build of the Body IQ knowledge graph, so everything loads with no backend. A few things that need the live server are turned off here:

  • Global search (sidebar) is disabled — it queries the API.
  • The JSON API and the API “Try it” playgroundaren’t included.
  • The data is a snapshot — it refreshes only when the demo is rebuilt, not live from the database.

Everything else — the body map, progression ladders, coverage heatmap, exercise finder, and all anatomy/exercise/source pages — works fully. The full app (live search + API + database) runs from the source on GitHub.

Middle Deltoid

Middle fibers of the deltoid. Primary shoulder abductor, particularly in posterior planes and higher elevation angles.

Draft95%

Anatomy

Origin
Acromion (typically 4-5 tendinous bands)
Insertion
Deltoid tuberosity of humerus
Action
Primary abductor (35-65% contribution to abduction torque, particularly in posterior planes and higher elevation angles)
Innervation
Axillary nerve, anterior branch (C5-C6)
Blood Supply
Thoracoacromial artery, posterior circumflex humeral artery

Movements (2)

MovementJointRoleNotes
Shoulder AbductionGlenohumeral JointPrimary35-65% contribution to abduction torque
Shoulder FlexionGlenohumeral JointSecondary—

Exercises (9)

ExerciseRole
Overhead Press (Seated)Primary
Lateral RaisePrimary
Jumping JackPrimary
Water Bottle Lateral RaisePrimary
Empty Can Exercise (Scaption with Thumbs Down)Primary
Dumbbell Shoulder PressPrimary
Full Can Exercise (Scaption with Thumbs Up)Secondary
Scaption with External RotationSecondary
Prone External Rotation at 90° AbductionStabilizer

Sources